MDEA为主体的复配胺液选择性脱硫性能实验研究

发布时间：2018-02-04 16:07

本文关键词： 甲基二乙醇胺 -氨基--甲基--丙醇二甘醇胺选择性脱硫　出处：《石油与天然气化工》2017年05期 　论文类型：期刊论文

【摘要】：在总浓度为2 mol/L的条件下,运用小型反应釜,采用恒压吸收法和恒容吸收法,对以MDEA为主体、DGA与AMP为添加剂的复配胺液进行不同物质的量比下选择性吸收H_2S性能的实验研究。通过分析气相浓度、吸收速率、酸气脱除率及选择性因子,优选出不同复配胺液在此浓度下选择性脱硫的最优配比。实验结果表明:2mol/L MDEA+DGA复配胺液在物质的量比为10∶3时,对原料气中H_2S的吸收速率、脱除率均较高,对CO_2的吸收速率、脱除率均较低,选择性因子最大,为该复配胺液的最优配比;2mol/L MDEA+AMP复配胺液在物质的量比为10∶3时,对原料气中H_2S的吸收速率、脱除率均较高,对CO_2的吸收速率、脱除率均较低,选择性因子最大,为该复配胺液的最优配比。
[Abstract]:Under the condition of total concentration of 2 mol/L, using small reactor, constant pressure absorption method and constant volume absorption method, taking MDEA as the main body. The selective absorption of H2S in the mixture of DGA and AMP was studied by analyzing the gas phase concentration, absorption rate, acid gas removal rate and selectivity factor. The optimum ratio of selective desulphurization of different amines at this concentration was selected. The experimental results showed that the ratio of 10: 3 was 10: 3 at the ratio of 10: 3 to 1: 2 mol / L MDEA DGA. The absorption rate and removal rate of H _ 2S in feedstock gas were higher, and the absorption rate and removal rate of CO_2 were lower, and the selectivity factor was the largest, which was the best proportion of the compound amine solution. When the ratio of 2 mol / L MDEA AMP amines is 10: 3, the absorption rate and removal rate of H _ 2S in feedstock gas are higher and the absorption rate of CO_2 is higher. The removal rate is lower and the selectivity factor is the largest, which is the best proportion of the compound amines.
【作者单位】：中国石油大学(华东)储运与建筑工程学院;中国石油大学(华东)山东省油气储运安全省级重点实验室;中海石油气电集团技术研发中心;
【基金】：高技术船舶科研项目“天然气预处理用大型塔器研制”(工信部联装[2014]495号) 中国石油大学(华东)自主创新科研计划项目“基于胺法脱酸动力学的海上LNG选择性脱硫性能研究”(14CX05033A)
【分类号】：TE644
【正文快照】： 近年来,随着天然气工业的逐渐发展,有关天然气预处理及开发利用技术日益受到重视[1]。由于售气合同的要求,当原料气中H2S的摩尔分数超过20×10-6时必须进行脱硫处理[2]。而对于CO2,则没有硬性规定。例如在天然气中保留3%(φ)的CO2,其发热量同样能达到要求[3-4]。选择性脱硫工

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